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The AAPG/Datapages Combined Publications Database
Showing 714 Results. Searched 200,619 documents.
Seismic Velocity Anisotropy in Chimore Area, Bolivia
Michael Fry, Eloy Martinez, James Baker, Mark Wallace
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... reflector degradation is seen as a set of time shifts associated with changing velocity with azimuth. This sinusoidal azimuthal variation in NMO velocity...
2008
Geomechanical and Geophysical Analysis of a Wattenberg Field through Wavefield Re-Datuming and Inversion
Jyoti Behura, Pete Smith, Oscar Quezada
Unconventional Resources Technology Conference (URTEC)
...◦ are displayed. In the presence of azimuthal anisotropy, a sinusoidal moveout is expected with azimuth for every value of offset (traces within any two...
2016
Effects of Variations in Subsidence and Sediment Supply on Parasequence Stacking Patterns: Chapter 14: Recent Developments in Siliciclastic Sequence Stratigraphy
F. L. Wehr
AAPG Special Volumes
... how depositional sequences and systems tracts can be related to eustasy. By assuming a constant rate of subsidence and a sinusoidal eustatic function...
1993
Dielectric Anisotropy and Grain Orientation
A. M. Winkelmolen
AAPG Bulletin
... or secondary. Integral bulk techniques, like the measurement of dielectric anisotropy (DA) on cylindrical plugs, inevitably produce a sinusoidal signal...
1972
Sediments of the Malacca Strait, Southeast Asia
George H. Keller , Adrian F. Richards
Journal of Sedimentary Research (SEPM)
... of the strait. Sand waves occur in the region consisting entirely of coarse to medium sand in the area of maximum current velocity between Malacca and Port...
1967
Early molluscan evolution: Evidence from the trace fossil record
Adolf Seilacher, James W. Hagadorn
PALAIOS
... and Heys, 1997). Transverse ´ corrugations and undulations are hypothesized to record the waves of muscular contraction, as in the foot of a modern...
2010
Tectonic Event Stratigraphy in a Fluvio-Lacustrine, Strike-Slip Setting: The Boss Point Formation (Westphalian A), Cumberland Basin, Maritime Canada
A. Guy Plint, Gregory H. Browne
Journal of Sedimentary Research (SEPM)
...) from mudstone into fine to very fine sandstone lacking mud interbeds (Figs. 13, 14). Sinusoidal ripple lamination and Type B climbing ripples (Jopling...
1994
Sedimentology of the Upper Pennsylvanian Bigheart Sandstone Member, Tallant Formation, Pawnee and Osage Counties, Oklahoma
Ruiqian Chen, Robert W. Scott
Oklahoma City Geological Society
... have a sinusoidal profile (Fig. 10). This indicates an environment with weak currents where the water motion was dominated by oscillations...
2012
Characteristics of Two, Pennsylvanian-Age, Semidiurnal Tidal Deposits in the Illinois Basin, U.S.A.
Erik P. Kvale, Allen W. Archer
CSPG Special Publications
... thickening and thinning (Fig. 8). When sequential laminae are numbered and their thicknesses plotted on a histogram, a series of sinusoidal curves...
1991
Deltaic Depositional Processes in a Glacier-Fed Lake: A Model for the Fluvial/Lacustrine Interface
Jim Bogen
Special Publications of SEPM
... against standard deviation, a . The bulk of the samples cluster around a sinusoidal or M-shaped trend, well known from fluvial deposits. The ma- 9000 BP...
1987
Exploration and Production Scale Lateral Variability in Phylloid Algal Mound and Associated Reservoir Facies, Paradox Basin, SE Utah
G. Michael Grammar, Gregor P. Eberli
West Texas Geological Society
... by the near sinusoidal distribution of algal mounds in outcrop (Figure 4). Summary and Implications to Hydrocarbon Exploration In this study, we...
1998
Sedimentology of Middle Precambrian Animikean Quartzites, Florence County, Wisconsin
Tor H. Nilsen
Journal of Sedimentary Research (SEPM)
..., numerous straight, convex, and sinusoidal forms are found also. The maximum amplitude measured was 4 feet, with the thickness of individual cross-strata...
1965
Geocentric Sectoring of LWD Azimuthal Log Data for Improved RDIP and RSTRIKE Analysis: Enhanced Reservoir Navigation and Petrophysical Characterization
James J. Willis, Lauren A. Martz
GCAGS Transactions
... to the wellbore, waves critically refracting along a layer boundary with a fast formation proximal to the borehole may control the first arrivals...
2017
Formalizing Geological Knowledge--With an Example of Modeling Stratigraphy Using Fuzzy Logic
Ulf Nordlund
Journal of Sedimentary Research (SEPM)
... data for the simulation were as follows: (1) A sinusoidal sea-level curve with an amplitude of 30 m and a cycle length of 20,000 yr. (2) A tectonic...
1996
Evidence for Dynamic Climate Change on Sub-106-Year Scales from the Late Paleozoic Glacial Record, Tamworth Belt, New South Wales, Australia
Lauren P. Birgenheier, Christopher R. Fielding, Michael C. Rygel, Tracy D. Frank, John Roberts
Journal of Sedimentary Research (SEPM)
... have formed in shallow-water environments affected by continuous waves (evident from symmetrical wave ripples), currents (evident from cross-bedding...
2009
Experimental Investigation On Self-Channelized Erosive Gravity Currents
Pierre Weill, Eric Lajeunesse, Olivier Devauchelle, François Métiver, Angela Limare, Benoît Chauveau, Dominique Mouazé
Journal of Sedimentary Research (SEPM)
..., McCaffrey, W.D., Peakall, J., and Kneller, B.C., 2010, Submarine channel levee shape and sediment waves from physical experiments: Sedimentary Geology...
2014
Tubular Tidalites: A Biogenic Sedimentary Structure Indicative of Tidally Influenced Sedimentation
Murray K. Gingras, John-Paul Zonneveld
Journal of Sedimentary Research (SEPM)
... on burrow-infilling laminae to identify rhythmic trends in laminae thicknesses, visually fitting sinusoidal curves to the raw thickness distributions...
2015
An Entrenched Thalweg Channel on the Rhone Fan: Interpretation from a Seabeam and Seamarc I Survey
Suzanne O. Connell, William R. Normark, William B. F. Ryan, Neil H. Kenyon
Special Publications of SEPM
... or scalloped form in contrast with the abandoned thalweg downstream of the avulsion that exhibits the more typical meandering or sinusoidal form The cusps...
1991
Controls on Upper Devonian, Metre-Scale Carbonate Cyclicity, Icefall Brook, Southeast British Columbia, Canada
Paul E. Fejer, Guy M. Narbonne
CSPG Bulletin
... with the nature of the Grotto/Arcs cycles, and the bathymetric history of these strata can be modelled using three superimposed orders of roughly sinusoidal...
1992
Computer Simulation Models of Salt Domes
James C. Howard
AAPG Bulletin
... for the vertical displacement of the upper surface of the salt mass as a function of time. This surface deforms as sinusoidal waveforms (Fig. 6...
1971
Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chemery, Paris Basin, France
Paola Sala, Marcel Frehner, Nicola Tisato, O. Adrian Pfiffner
AAPG Bulletin
... of compressional waves in rocks to 10 kilobars: Part 1: Journal of Geophysical Research, v. 65, p. 10831102, doi:10.1029/JZ065i004p01083.BRGM, 2010...
2013
ENVIRONMENTAL PRESSURES INFLUENCING LIVING STROMATOLITES IN HAMELIN POOL, SHARK BAY, WESTERN AUSTRALIA
ERICA P. SUOSAARI, R. PAMELA REID, THALLES A. ABREU ARAUJO, PHILLIP E. PLAYFORD, DAVID K. HOLLEY, KENNETH J. MCNAMARA, GREGOR P. EBERLI
PALAIOS
... in Hamelin Pool is the result of local winds blowing over the surface of the water. Waves are influenced by water depth and wind speed, duration...
2016
Modern Sedimentary Facies of the Open Pacific Coast and Pleistocene Analogs from Monterey Bay, California
W. R. Dupre, H. E. Clifton, R. E. Hunter
Pacific Section SEPM
... to such processes as waves,, t i d e s , and w i n d s . On the open Pacific c o a s t , waves are by far the most important of these processes...
1980
Supercritical-flow Deposits and Their Distribution in a Submarine Channel System, Middle Eocene, Ainsa Basin, Spanish Pyrenees
Pauline H. Cornard, Kevin T. Pickering
Journal of Sedimentary Research (SEPM)
...., Van Den Berg, J.H., and Mastbergen, D.R., 2011, A comparative study of sediment waves and cyclic steps based on geometries, internal structures...
2019
Sedimentary Successions in Pleistocene Ice-Marginal Lakes
John Shaw
Special Publications of SEPM
... of Jopling and Walker 1968 has been partly adopted with cross laminations identified Cross bedded Sand Facies type A type B or sinusoidal fig 4E F...
1975